I am getting ready to wire up a new panel box in my house. I purchased a new Eaton 200 Amp 42-Space CH Type Main Breaker Loadcenter. My house currently only has 3 wire service (the new box is capable of both 3 and 4 wire service. I need to know whether or not i need to connect the bonding strap to the neutral bar and/or do i need to run a ground wire to a grounding pole. The meter box is attached to a metal grounding post. We recently built a new addition and the meter is now inside with the panel box right next to it. It would be very easy to run a wire to it if i need to. I attached some photos of the panel box for a reference.
I need to clarify a few things in my post. when i stated "bonding strap" i meant the small rod that you can turn and put into the neutral bar (see picture). when i said "grounding post" i meant the bar strip on the left, which has a small slot where you would normally put the ground wire for the 4 wire service.